Flotation separation method for talc and copper sulphide

Abstract

The invention relates to a flotation separation method for talc and copper sulfide, which comprises the following steps: step 1, respectively inserting a cathode and an anode into an electrolytic bath, adding a salt solution into the electrolytic bath, and adding talc-containing copper sulfide bulk concentrate into the electrolytic bath while stirring; 2, after uniform stirring, stirring continues to be kept, a constant current source is turned on, current is applied to the electrolytic bath, constant current pretreatment is conducted for 15-35 min, and electrocatalytic oxidation pretreatment mixed ore pulp is obtained; and thirdly, the electrocatalytic oxidation pretreatment mixed ore pulp is transferred to a flotation system to be subjected to flotation operation, and copper sulfide and tailings are obtained. According to the invention, the surface hydrophobicity of the copper sulfide is reduced, so that the floatability difference between the talc and the copper sulfide is increased; effective separation of the two in flotation is achieved, and a large number of talc inhibitors do not need to be used.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal beneficiation and metallurgy, and in particular relates to a method for flotation separation of talc and copper sulfide. Background technique [0002] Copper ranks second in the consumption of non-ferrous metal materials in China. It is a very important non-ferrous metal and is widely used in electronic devices, mechanical processing and chemical industry. In recent years, with the rapid development of science and technology, especially electronic science, the demand for copper metal in all countries in the world is constantly rising. Chalcopyrite is the most important source of copper metal, and is an important industrial raw material and strategic resource. In the copper concentrate smelting process, if the talc content is too high, the high content of magnesium oxide will not only produce a large amount of slag, but also shorten the service life of the smelting furnace. Therefore, it...

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Problems solved by technology

At present, the commonly used copper sulfide oxidants include peroxide, hypochlorite, bleaching powder and ozone, etc., but they all have the disadvantages of large dosage, easy generation of secondary products, easy introduction of impurity ions, high cost, etc., and industrial application is relatively difficult.

[0006] To sum up, in view of the current talc and copper sulfide flotation separation inhibitor dosage is large and the indicators are unstable, the oxidant cost is high and secondary products are easy to be produced, and the development of a copper sulfide and talc flotation separation method can not only Realize the high-efficiency separation of talc and copper sulfide, reduce the impact on copper concentrate smelting, and have great significance in increasing corporate income, improving resource value, and ensuring safe supply of copper metal.

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